Simplifies usage of Docker Compose for local development and integration testing in Gradle environment.
composeUp task starts the application and waits till all containers become healthy and all exposed TCP ports are open (so till the application is ready). It reads assigned host and ports of particular containers and stores them into dockerCompose.servicesInfos property.
composeDown task stops the application and removes the containers, only if 'stopContainers' is set to 'true' (default value).
composeDownForced task stops the application and removes the containers.
composePull task pulls and optionally builds the images required by the application. This is useful, for example, with a CI platform that caches docker images to decrease build times.
composeBuild task builds the services of the application.
composePush task pushes images for services to their respective registry/repository.
composeLogs task stores logs from all containers to files in containerLogToDir directory.
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath "com.avast.gradle:gradle-docker-compose-plugin:$versionHere"
}
}
apply plugin: 'docker-compose'
// Or use the new Gradle Portal plugins (then you don't have to add the dependency as above):
// plugins {
// id 'com.avast.gradle.docker-compose' version "$versionHere"
// }
dockerCompose.isRequiredBy(test)docker-compose upis executed in the project directory, so it uses thedocker-compose.ymlfile.- If the provided task (
testin the example above) executes a new process then environment variables and Java system properties are provided.- The name of environment variable is
${serviceName}_HOSTand${serviceName}_TCP_${exposedPort}(e.g.WEB_HOSTandWEB_TCP_80). - The name of Java system property is
${serviceName}.hostand${serviceName}.tcp.${exposedPort}(e.g.web.hostandweb.tcp.80). - If the service is scaled then the
serviceNamehas_1,_2... suffix (e.g.WEB_1_HOSTandWEB_1_TCP_80,web_1.hostandweb_1.tcp.80).- Please note that in Docker Compose v2, the suffix contains
-instead of_
- Please note that in Docker Compose v2, the suffix contains
- The name of environment variable is
- I want to be able to run my application on my computer, and it must work for my colleagues as well. Just execute
docker compose upand I'm done - e.g. the database is running. - I want to be able to test my application on my computer - I don't wanna wait till my application is deployed into dev/testing environment and acceptance/end2end tests get executed. I want to execute these tests on my computer - it means execute
docker compose upbefore these tests.
You could easily ensure that docker compose up is called before your tests but there are few gotchas that this plugin solves:
- If you execute
docker compose up -d(detached) then this command returns immediately and your application is probably not able to serve requests at this time. This plugin waits till all containers become healthy and all exported TCP ports of all services are open.- If waiting for healthy state or open TCP ports timeouts (default is 15 minutes) then it prints log of related service.
- It's recommended not to assign fixed values of exposed ports in
docker-compose.yml(i.e.8888:80) because it can cause ports collision on integration servers. If you don't assign a fixed value for exposed port (use just80) then the port is exposed as a random free port. This plugin reads assigned ports (and even IP addresses of containers) and stores them intodockerCompose.servicesInfomap. - There are minor differences when using Linux containers on Linux, Windows and Mac, and when using Windows Containers. This plugin handles these differences for you so you have the same experience in all environments.
The plugin must be applied on project that contains docker-compose.yml file. It supposes that Docker Engine and Docker Compose are installed and available in PATH.
Starting from plugin version 0.17.6, Gradle 6.1 is required, because Task.usesService() is used.
Starting from plugin version 0.17.0, useDockerComposeV2 property defaults to true, so the new
docker compose(instead of deprecateddocker-composeis used).
Starting from plugin version 0.10.0, Gradle 4.9 or newer is required (because it uses Task Configuration Avoidance API).
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath "com.avast.gradle:gradle-docker-compose-plugin:$versionHere"
}
}
apply plugin: 'docker-compose'
dockerCompose.isRequiredBy(test) // hooks 'dependsOn composeUp' and 'finalizedBy composeDown', and exposes environment variables and system properties (if possible)
dockerCompose {
useComposeFiles = ['docker-compose.yml', 'docker-compose.prod.yml'] // like 'docker-compose -f <file>'; default is empty
startedServices = ['web'] // list of services to execute when calling 'docker-compose up' or 'docker-compose pull' (when not specified, all services are executed)
scale = [${serviceName1}: 5, ${serviceName2}: 2] // Pass docker compose --scale option like 'docker-compose up --scale serviceName1=5 --scale serviceName2=2'
forceRecreate = false // pass '--force-recreate' and '--renew-anon-volumes' when calling 'docker-compose up' when set to 'true`
noRecreate = false // pass '--no-recreate' when calling 'docker-compose up' when set to 'true`
buildBeforeUp = true // performs 'docker-compose build' before calling the 'up' command; default is true
buildBeforePull = true // performs 'docker-compose build' before calling the 'pull' command; default is true
ignorePullFailure = false // when set to true, pass '--ignore-pull-failure' to 'docker-compose pull'
ignorePushFailure = false // when set to true, pass '--ignore-push-failure' to 'docker-compose push'
pushServices = [] // which services should be pushed, if not defined then upon `composePush` task all defined services in compose file will be pushed (default behaviour)
buildAdditionalArgs = ['--force-rm']
pullAdditionalArgs = ['--ignore-pull-failures']
upAdditionalArgs = ['--no-deps']
downAdditionalArgs = ['--some-switch']
composeAdditionalArgs = ['--context', 'remote', '--verbose', "--log-level", "DEBUG"] // for adding more [options] in docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
waitForTcpPorts = true // turns on/off the waiting for exposed TCP ports opening; default is true
waitForTcpPortsTimeout = java.time.Duration.ofMinutes(15) // how long to wait until all exposed TCP become open; default is 15 minutes
waitAfterTcpProbeFailure = java.time.Duration.ofSeconds(1) // how long to sleep before next attempt to check if a TCP is open; default is 1 second
tcpPortsToIgnoreWhenWaiting = [1234] // list of TCP ports what will be ignored when waiting for exposed TCP ports opening; default: empty list
waitForHealthyStateTimeout = java.time.Duration.ofMinutes(15) // how long to wait until a container becomes healthy; default is 15 minutes
waitAfterHealthyStateProbeFailure = java.time.Duration.ofSeconds(5) // how long to sleep before next attempt to check healthy status; default is 5 seconds
checkContainersRunning = true // turns on/off checking if container is running or restarting (during waiting for open TCP port and healthy state); default is true
captureContainersOutput = false // if true, prints output of all containers to Gradle output - very useful for debugging; default is false
captureContainersOutputToFile = project.file('/path/to/logFile') // sends output of all containers to a log file
captureContainersOutputToFiles = project.file('/path/to/directory') // sends output of all services to a dedicated log file in the directory specified, e.g. 'web.log' for service named 'log'
composeLogToFile = project.file('build/my-logs.txt') // redirect output of composeUp and composeDown tasks to this file; default is null (ouput is not redirected)
containerLogToDir = project.file('build/logs') // directory where composeLogs task stores output of the containers; default: build/containers-logs
includeDependencies = false // calculates services dependencies of startedServices and includes those when gathering logs or removing containers; default is false
stopContainers = true // doesn't call `docker-compose down` if set to false - see below the paragraph about reconnecting; default is true
removeContainers = true // default is true
retainContainersOnStartupFailure = false // if set to true, skips running ComposeDownForced task when ComposeUp fails - useful for troubleshooting; default is false
removeImages = com.avast.gradle.dockercompose.RemoveImages.None // Other accepted values are All and Local
removeVolumes = true // default is true
removeOrphans = false // removes containers for services not defined in the Compose file; default is false
projectName = 'my-project' // allow to set custom docker-compose project name (defaults to a stable name derived from absolute path of the project and nested settings name), set to null to Docker Compose default (directory name)
projectNamePrefix = 'my_prefix_' // allow to set custom prefix of docker-compose project name, the final project name has nested configuration name appended
executable = '/path/to/docker-compose' // allow to set the base Docker Compose command (useful if not present in PATH). Defaults to `docker-compose`. Ignored if useDockerComposeV2 is set to true.
useDockerComposeV2 = true // Use Docker Compose V2 instead of Docker Compose V1, default is true. If set to true, `dockerExecutable compose` is used for execution, so executable property is ignored.
dockerExecutable = '/path/to/docker' // allow to set the path of the docker executable (useful if not present in PATH)
dockerComposeWorkingDirectory = project.file('/path/where/docker-compose/is/invoked/from')
dockerComposeStopTimeout = java.time.Duration.ofSeconds(20) // time before docker-compose sends SIGTERM to the running containers after the composeDown task has been started
environment.put 'BACKEND_ADDRESS', '192.168.1.100' // environment variables to be used when calling 'docker-compose', e.g. for substitution in compose file
}
test.doFirst {
// exposes "${serviceName}_HOST" and "${serviceName}_TCP_${exposedPort}" environment variables
// for example exposes "WEB_HOST" and "WEB_TCP_80" environment variables for service named `web` with exposed port `80`
// if service is scaled using scale option, environment variables will be exposed for each service instance like "WEB_1_HOST", "WEB_1_TCP_80", "WEB_2_HOST", "WEB_2_TCP_80" and so on
dockerCompose.exposeAsEnvironment(test)
// exposes "${serviceName}.host" and "${serviceName}.tcp.${exposedPort}" system properties
// for example exposes "web.host" and "web.tcp.80" system properties for service named `web` with exposed port `80`
// if service is scaled using scale option, environment variables will be exposed for each service instance like "web_1.host", "web_1.tcp.80", "web_2.host", "web_2.tcp.80" and so on
dockerCompose.exposeAsSystemProperties(test)
// get information about container of service `web` (declared in docker-compose.yml)
def webInfo = dockerCompose.servicesInfos.web.firstContainer
// in case scale option is used, dockerCompose.servicesInfos.containerInfos will contain information about all running containers of service. Particular container can be retrieved either by iterating the values of containerInfos map (key is service instance name, for example 'web_1')
def webInfo = dockerCompose.servicesInfos.web.'web_1'
// pass host and exposed TCP port 80 as custom-named Java System properties
systemProperty 'myweb.host', webInfo.host
systemProperty 'myweb.port', webInfo.ports[80]
// it's possible to read information about exposed UDP ports using webInfo.updPorts[1234]
}It is possible to create a new set of ComposeUp/ComposeBuild/ComposePull/ComposeDown/ComposeDownForced/ComposePush tasks using following syntax:
Groovy
dockerCompose {
// settings as usual
myNested {
useComposeFiles = ['docker-compose-for-integration-tests.yml']
isRequiredBy(project.tasks.myTask)
}
}- It creates
myNestedComposeUp,myNestedComposeBuild,myNestedComposePull,myNestedComposeDown,myNestedComposeDownForcedandmyNestedComposePushtasks. - It's possible to use all the settings as in the main
dockerComposeblock. - Configuration of the nested settings defaults to the main
dockerComposesettings (declared before the nested settings), except following properties:projectName,startedServices,useComposeFiles,scale,captureContainersOutputToFile,captureContainersOutputToFiles,composeLogToFile,containerLogToDir,pushServices
When exposing service info from myNestedComposeUp task into your task you should use following syntax:
test.doFirst {
dockerCompose.myNested.exposeAsEnvironment(test)
}Kotlin
test.doFirst {
dockerCompose.nested("myNested").exposeAsEnvironment(project.tasks.named("test").get())
}It's also possible to use this simplified syntax:
dockerCompose {
isRequiredByMyTask 'docker-compose-for-integration-tests.yml'
}If you specify stopContainers to be false then the plugin automatically tries to reconnect to the containers from the previous run
instead of calling docker-compose up again. Thanks to this, the startup can be very fast.
It's very handy in scenarios when you iterate quickly and e.g. don't want to wait for Postgres to start again and again.
Because you don't want to check-in this change to your VCS, you can take advantage of this init.gradle initialization script (in short, copy this file to your USER_HOME/.gradle/ directory).
This plugin can be used also from Kotlin DSL, see the example:
import com.avast.gradle.dockercompose.ComposeExtension
apply(plugin = "docker-compose")
configure<ComposeExtension> {
includeDependencies.set(true)
createNested("local").apply {
setProjectName("foo")
environment.putAll(mapOf("TAGS" to "feature-test,local"))
startedServices.set(listOf("foo-api", "foo-integration"))
upAdditionalArgs.set(listOf("--no-deps"))
}
}- You can call
dockerCompose.isRequiredBy(anyTask)for any task, for example for your customintegrationTesttask. - If some Dockerfile needs an artifact generated by Gradle then you can declare this dependency in a standard way, like
composeUp.dependsOn project(':my-app').distTar - All properties in
dockerComposehave meaningful default values so you don't have to touch it. If you are interested then you can look at ComposeSettings.groovy for reference. dockerCompose.servicesInfoscontains information about running containers so you must access this property aftercomposeUptask is finished. SodoFirstof your test task is perfect place where to access it.- Plugin honours a
docker-compose.override.ymlfile, but only when no files are specified withuseComposeFiles(conform command-line behavior). - Check ContainerInfo.groovy to see what you can know about running containers.
- You can determine the Docker host in your Gradle build (i.e.
docker-machine start) and set theDOCKER_HOSTenvironment variable for compose to use:dockerCompose { environment.put 'DOCKER_HOST', '192.168.64.9' } - If the services executed by
docker-composeare running on a specific host (different than Docker, like in CirceCI 2.0), thenSERVICES_HOSTenvironment variable can be used. This value will be used as the hostname where the services are expected to be listening. - If you need to troubleshoot a failing ComposeUp task, set
retainContainersOnStartupFailureto prevent containers from begin forcibly deleted. Does not overrideremoveContainers, so if you runComposeDown, it will not be affected.
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